321125653 has 8 divisors (see below), whose sum is σ = 329265216. Its totient is φ = 313000800.

The previous prime is 321125647. The next prime is 321125657. The reversal of 321125653 is 356521123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321125653 - 2¹⁷ = 320994581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321125657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50418 + ... + 56428.

It is an arithmetic number, because the mean of its divisors is an integer number (41158152).

Almost surely, 2^321125653 is an apocalyptic number.

It is an amenable number.

321125653 is a deficient number, since it is larger than the sum of its proper divisors (8139563).

321125653 is a wasteful number, since it uses less digits than its factorization.

321125653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355.

The product of its digits is 5400, while the sum is 28.

The square root of 321125653 is about 17919.9791573540. The cubic root of 321125653 is about 684.7914565765.

Adding to 321125653 its reverse (356521123), we get a palindrome (677646776).

The spelling of 321125653 in words is "three hundred twenty-one million, one hundred twenty-five thousand, six hundred fifty-three".